<template>
  <div class="login_box">
    <div class="login_form">
      <div class="logo">
        <img src=".././assets/logo.png" alt="" />
      </div>
      <!-- 登录表单 -->
      <el-form
        ref="loginFormRef"
        label-width="0px"
        :model="loginForm"
        :rules="loginRules"
      >
        <el-form-item prop="username">
          <el-input v-model="loginForm.username"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password"></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 登录表单数据绑定对象
      loginForm: {
        username: "admin",
        password: "123456"
      },
      // 表单验证规则对象
      loginRules: {
        username: [
          { require: true, message: "请输入用户名", trigger: "blur" },
          { min: 3, max: 15, message: "长度在 3 到 15 个字符", trigger: "blur" }
        ],
        password: [
          { require: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 18, message: "长度在 6 到 18 个字符", trigger: "blur" }
        ]
      }
    };
  },
  methods: {
    // 重置表单
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields();
    },
    // 登录处理
    login() {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) {
          return;
        }
        // 发请求
        const { data: res } = await this.$http.post("login", this.loginForm);
        console.log(res);
        if (res.meta.status !== 200) {
          return this.$message({
            message: "登录失败",
            type: "error"
          });
        }
        this.$message.success('登录成功')
        //1. 把token保存起来
        window.sessionStorage.setItem('token',res.data.token)
        // 2. 跳转主页
        this.$router.push('/home')
      });
    }
  }
};
</script>

<style lang="less" scoped>
.login_box {
  height: 100%;
  background-color: green;
}
.login_form {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 4px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.login_form .logo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #add;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
  }
}
.login_form .el-form {
  position: absolute;
  bottom: 0;
  padding: 0 20px;
  width: 100%;
  box-sizing: border-box;
}
.btns {
  display: flex;
}
</style>
